ERA24LA201

NTSB accident investigation · Stinson 108 · Beach City, OH · April 25, 2024

Accident · No injuriesClass 4 · LimitedFinal report
Date
April 25, 2024, 14:30 local (18:30 UTC)
Place
Beach City, OH
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Emergency descent
Aircraft
N97517Stinson 108
Defining event
Emergency descent: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Eastern Region Aviation
Parties
FAA
FAA report
20240425003999A
Case key
194190

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

A total loss of engine power due to the due to the pilot’s delayed application of carburetor heat.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Action: delayed actionPersonnel issues › Action/decision · PilotStinson 108: 2 casesAll aircraft: 894 casesProbable cause
Temp/humidity/pressure: conducive to carburetor icingEnvironmental issues › Conditions/weather/phenomena · Response/compensationStinson 108: 3 casesAll aircraft: 435 casesProbable cause
Ice/rain protection system: intake anti-ice, deiceAircraft › Aircraft systems · Incorrect use/operationStinson 108: 1 caseAll aircraft: 108 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that about one hour into the flight the engine rpm began to decrease. The rpm quickly worsened, and he applied carburetor heat, but the engine did not respond before losing all power. The pilot conducted a forced landing to rough terrain, during which the airplane struck a ditch, substantially damaging the fuselage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation and that loss of engine power was likely the result of carburetor icing. The weather reported at an airport about 13 nautical miles from of the accident site included a temperature of 14°C and a dew point 3°C. The calculated relative humidity at this temperature and dewpoint was 47 percent. Review of the icing probability chart contained within Federal Aviation Administration Special Airworthiness Information Bulletin CE-09-35 revealed the atmospheric conditions at the time of the accident were "conducive to serious icing at glide power."

Aircraft

Registration
N97517
Reported as
Stinson 108
Category
Airplane
Serial number
108-517
Built
1946
Airframe hours
1,581
Engine
Franklin 150, 150 hp, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 24, 2023 · 16 hours before
Departed
I74 · Urbana, OH
Destination
OH15 · Minerva, OH
Equipment
Handheld GPS

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
75
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Without waivers/limitations
Last flight review
April 8, 2024
Seat
Left
Restraint
4-point
Flight hours
894 total · 384 in this make and model · 5 in the last 90 days · 3 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
4,700 ft broken
Temperature
57 °F, dew point 37 °F
Altimeter
30.28 inHg
Observed at
PHD, 13 nm away
METAR
KPHD 251853Z AUTO VRB04KT 10SM BKN047 14/03 A3028 RMK AO2 SLP257 T01390028

Docket · 4

The files NTSB released with the investigation on June 21, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.8 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.